Hi dear
Ya u can check it
go to
# cd /etc/sysconfig/network-scripts/
#ls
when u give ls command here then if eth0 is configured , then u will see the file name as ifcfg-eth0
if eth1 is configred i, u wiill see the file named ifcfg-eth1 there & so on...
if u want to know abt the eth0 inteface(means abt ipaddress etc)
open these files in any editor
& also u can see all ip address through ifconfig ..., it will show u all the interfaces which have ip-addresses..
Gaurav